[U-Boot] [PATCH 4/4] ARM: rmobile: Fix broken reset code on Porter

[Marek Vasut]

The 'reset' command did not work on Porter because the reset code
was accessing the wrong PMIC address over broken I2C bus driver.
Replace the code with DM-aware code and fix up the PMIC address.
This makes the 'reset' command work again.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
---
 board/renesas/porter/porter.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/board/renesas/porter/porter.c b/board/renesas/porter/porter.c
index dfefd7fb71..320841f27b 100644
--- a/board/renesas/porter/porter.c
+++ b/board/renesas/porter/porter.c
@@ -116,12 +116,25 @@ const struct rmobile_sysinfo sysinfo = {
 
 void reset_cpu(ulong addr)
 {
-	u8 val;
+	struct udevice *dev;
+	const u8 pmic_bus = 6;
+	const u8 pmic_addr = 0x5a;
+	u8 data;
+	int ret;
 
-	i2c_set_bus_num(2); /* PowerIC connected to ch2 */
-	i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
-	val |= 0x02;
-	i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
+	ret = i2c_get_chip_for_busnum(pmic_bus, pmic_addr, 1, &dev);
+	if (ret)
+		hang();
+
+	ret = dm_i2c_read(dev, 0x13, &data, 1);
+	if (ret)
+		hang();
+
+	data |= BIT(1);
+
+	ret = dm_i2c_write(dev, 0x13, &data, 1);
+	if (ret)
+		hang();
 }
 
 #ifdef CONFIG_SPL_BUILD
-- 
2.15.1